1020121102021 has 8 divisors (see below), whose sum is σ = 1179899106624. Its totient is φ = 863854702080.

The previous prime is 1020121102019. The next prime is 1020121102051. The reversal of 1020121102021 is 1202011210201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020121102021 - 2¹ = 1020121102019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020121101992 and 1020121102010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020121102051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 877900540 + ... + 877901701.

It is an arithmetic number, because the mean of its divisors is an integer number (147487388328).

Almost surely, 2^{1020121102021} is an apocalyptic number.

It is an amenable number.

1020121102021 is a deficient number, since it is larger than the sum of its proper divisors (159778004603).

1020121102021 is an equidigital number, since it uses as much as digits as its factorization.

1020121102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755802331.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020121102021 its reverse (1202011210201), we get a palindrome (2222132312222).

The spelling of 1020121102021 in words is "one trillion, twenty billion, one hundred twenty-one million, one hundred two thousand, twenty-one".